Oil and water burner.



E. A. HORNBOSTEL & J. CAREY.

OIL AND WATER BURNER.

APPLICATION FILED MAR.10.1913- RENEWED FEB. 15, I915.

1,154,019. Patented Sept. 21, 1915.

2 SHEETS-SHEET A TTORNEKS WITNESSES."

COLUMBIA PLANounAPH C0,, WASHINGTON. D. c.

E. A. HORNBOSTEL 111. CAREY.

OIL AND WATER BURNER.

APPLICATION FILED MAR. 10, I913. RENEWED FEB. 15,1915- 1,154,019. Patented Sept. 21, 1915.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH CID-,WASHINGTON. D. C.

1T @TATEd a EDWARD A. HORNBOSTEL AND JOHN CAREY, 0F DES MOINES, IOWA.

OIL AND WATER BURNER.

msaoro.

Specification of Letters Patent.

Patented Sept. 21, 1915.

Application filed March 10, 1913, Serial No. 753,425. Renewed February 15, 1915. Serial No. 8,629.

To all whom it may concern Be it known that we, EDWARD A. HORN- BOSTEL and J OHN CAREY, citizens of the United States, residing in the city of Des Moines, county of Polk, and State of Iowa, have invented a new and useful Oil and Water Burner, of which the following is a specification. I

The object of our invention is to provide an oil and water burner of simple, durable and inexpensive construction in which the boiler is made of a single casting which includes the boiler proper and an additional tube spaced apart therefrom and communicating therewith.

A further object is to provide such an oil and water burner in which the boiler is provided with an air conducting tube extending through the boiler and open to the air at both ends to regulate the temperature within said boiler.

A further object is to provide an oil and water burner provided with float valves for controlling the supply of oil and water and to prevent overflowing if the flameshould become extinguished.

A further object is to provide an oil and water burner provided with a water circulating system of simple construction.

Our invention consists in certain details in the construction, arrangement and combi-' nation of the various parts of our oil and water burner whereby the objects contemplated are attained as hereinafter fully set forth, pointed out in our claims and illustrated in the accompanying drawings in which- Figure 1 shows a top or plan view of an oil and water burner embodying our invention. Fig. 2 shows a transverse, vertical sectional view taken on the line 2'2 of Fig. 1. Fig. 3 shows a longitudinal, central, sectional view taken through the boiler of our improved oil and water burner. Fig. 1 shows anend elevation of our burner. Fig. 5 shows a transverse, vertical sectional view through the pipe to which the oil is supplied, andFig. 6 shows a central longitudinal, vertical, sectional view of said pipe.

Our invention belongs to that class of devices in which kerosene is burned in connection with dry steam which is injected into the burning oil, thereby producing a much hotter and clearer flame than can otherwise be secured.

in the accompanying drawings we have used the reference numeral 10 to indicate generally the body of the boiler of our improved oil and water burner. The body 10 may be substantially rectangular in crosssection as shown in Fig. 2. The body 10 of the boiler is preferably cast integral with a pipe 11 which is spaced apart above the top of boiler 10 and communicates with what we shall call the rear end thereof, by means of a connecting pipe, 12. A spacing block 13 is cast between the forward ends of the pipe 11 and the body 10 of the boiler. In the rear end of the pipe 11 is a removable plug 14, preferably screw-threaded. The plug 14 closes the pipe 11 and may be removed for cleaning it.

In devices of this class a considerable difficulty has been experienced in regulating the heat as it is sometimes desirable to use but very little heat and at other times to use a large amount thereof. One of the difficulties in this connection is that if the boiler has the proper amount of radiating surface to generate steam and superheat it, when the burner is turned down it will produce too much steam and have a tendency to change the mixture of steam and oil vapor in the superheater. To overcome this to a large degree, we have provided the following mechanism: Centrally and longitudinally mounted in the boiler body 10 is an air pipe 15 open at both ends. The pipe 15 is preferably externally screw threaded at each end and at its forward end is preferably provided with a lock nut 16 and at its rear end with a downwardly extending elbow 17 The purpose of the elbow 17 is simply to cause a circulation of air through the pipe 15. It will be seen that the lower end of the elbow 17 extends below the burner which will be hereinafter described. By this construction, the cold air will be caused to circulate through the pipe 15, thereby reducing the temperature within the boiler. It will be seen that as the heat within the boiler is increased the circulation within the tube 15 will also be increased. Parallel with the pipe 11 is a pipe 18 preferably slightly municate at their rearward ends-with each.

other by means of elbow 21 and elbow 22 and a short connecting pipe 23.

At the forward end of the pipe is an elbow 24'connected with which is a short pipe 25 which extends downwardly and diagonally across and past the front of the boiler body 10 to a point near the lower side of the body 10, opposite theside on which the pipe 20 is located. Extending along the side of the boiler 10 near the lower part thereof and slightly spaced apart from the boiler body 10 is a burner tube 26. The burner tube 26communicates at its forward end with the pipe 25 by means upper part of the adjacent side of said boilerof an elbow 27 The burner tube 26 is provided in its top and bottom with a plurality of openings 28 and 29. The openings 28 are preferably slightly spaced apart from the central longitudinal vertical plane near the top of the pipe 26 at the side adjacent to the boiler body 10 in order that the flame of the burning oil as it emerges from the openings 28 may be directed against the body and above the water line therein. Preferably cast integral with boiler bodylO are supporting legs 30 on one side of said boiler body. Preferably cast integral with boiler body 10 on the side opposite thelegs 30 are supporting members 31 extending downwardly and laterally from the boiler body 10. Formed integral with the supporting members 31 is a trough or pan 32 parallel with the bodylO and the pipe 26 and resting just below the pipe 26. A water supply pipe 33 communicates with the lower portion of the forward end of the boiler body 10.

In the lower portions of the interior of the pipe 20 at each end thereof is a narrow upwardly extending flange 34: which is designed for the purpose of maintaining kerosene in the pipe 20 at a certain level. Communicating with the bottom of the pipe 20 and preferably at a point spaced apart from the ends therein is a kerosene or oil supply tube 35. In the oil supply tube 35 is a controlling valve 36. In the water supply tube 33 we have also provided a controlling valve which we have not illustrated for the reason that it is the same in construction as the valve 36.

For controlling the flow of kerosene or oil through the oil supply pipe we have provided a float valve indicated generally by the reference numeral 37. The float valve may be of ordinary type controlling a needle valve 38 and is adjustable so it may maintain the proper level of oil or kerosene in the pipe20. For controlling the flow of water through pipe 33 we have provided a similar float valve 39 shown in Fig. 1.

In the practical operation and use of our improved oil and water burner a small amount of oil 40 is permitted to pass into the pipe 20 until it reaches the level of the upper edges of the flanges 34. The oil will then pass downwardlv through the elbow 24, the pipe 25 and the elbow 27' into the burner tube 26. The oil flows through the openings 29 into thefuel pan 32 which is a starting device. A small'amount ofwater-is permitted to flow into the boiler body10; The oil in the pan 32 is then ignited and theoil in the pipe 26 is vaporized from the flame of the oil in the pan and the flame asses upwardly as indicated b the arrows'in Fig 2, heating'the side of the boiler body'10'.. In a very short time steam is generated and the steam passes through the passage 12: into the pipe 11 and thence through the pipes 18 and 20.

I The float valve in the oil supply pipe is'fix ed to keep the oil in the pipe 20 at such a level that it will not flow downwardly through the elbow 2-1. The passage of the steam through the pipe 20 carries the oil vapor with it and the steam and oil vapor together are fed'to the pipe 26'and there ignited.

The flow of water to the boiler 10 may be regulated by adjusting the float. valve 39 and the controlling valve in the water sup'-' ply pipe. l/Vhen oil vapor'is carried along with the steam and burned together-withthe steam as in our device we find that the boiler such device as. the pipe15. We have therefore mounted the cooling pipe 15 in the boiler body, thereby maintaining a circulation of air therethrough and preventing 10 is subject to too great heat without some overheating. Connected with the waterpipe I l 33 is an open ended pipe 41, extending upwardly a short distance as shown in Fig. 3. The purpose ofthis'pipe isto permit an overflow of the water and" thus prevent flooding of the coil pipes, when for any reason, the

float valve 39 fails to cut off the-water supp yr Bfy means of the flanges 34 in the pipe 20 we nd that we can maintain a suitable level of oil in said pipe so that the steam passing through the pipe will take up the proper amount of kerosene. By means of the float valves in the oil andfwater supply pipes we are able to maintain the proper supply of fuel and water. fire go out they rising oflthe level. of the oil orwater will shut off the supply. p

' On account of the location of. the openings 28 the flame of the burningoil isidi- In any case should the I rected against the. boiler bodyx'and also 7 ward until it reaches .the pipe 18,; thereby enabling us to secure" a supply of dry steam at the point where the steam takes up the oil in the pipe 20.

Our burner is of simple and extremely durable construction and is easy to operate. It provides for automatically shutting 01% the fuel and water in case of accident.

l/Ve claim as our invention.

1. In a device of the class described, a boiler body provided with a water inlet, a superheater in communication with said boiler body, a mixing chamber in communication with said superheater, an oil pocket in the lower portion of said mixing chamber, a burner in communication with said mix ing chamber, and means for automatically regulating the level of oil within said pocket.

2. In a device of the class described, a boiler body, means for automatically feeding water and regulating its level within said boiler body, a horizontal pipe extending through said boiler body having a downwardly extending end, a superheater in communication with the boiler body, a mixing chamber in communication with said superheater, an oil pocket in said mixing chamber, means for automatically feeding oil and regulating its level within said pocket, and a burner in communication with said mixing chamber.

3. In a device of the class described, a boilerbody, means for automatically feeding water and regulating its level within said boiler body, a horizontal pipe extending through said boiler body having a downwardly extending end, a superheater in communication with and above the boiler, a mixing chamber adjacent to the upper corner of one side of the boiler and in communication with said superheater, an oil pocket in said mixing chamber, means for automatically feeding oil and regulating its level within said pocket, and a burner in communication with said mixing chamber, said burner being designed to heat the opposite side of the boiler body from the one to which the mixing chamber is adjacent at a point above the water level within said boiler body.

t. In a device of the class described, a boiler body, automatic means for feeding water and regulating the level of the same within the said boiler body, a burner adjacent to the lower edge of one side of said boiler body and in a plane above the bottom of said boiler, a horizontal air passage through the boiler having a downwardly ex- Gopies of this patent may be obtained for five cents each, by addressing the Washington, D. 0.

tending portion at one end, and means for feeding a mixture of oil vapor and superheated steam to said burner.

5. In a device of the class described, a boiler body, a super-heater connected therewith, automatic means for feeding water and regulating the level of the same within the said boiler body, a burner adjacent to the lower edge of one side of said boiler body and in a plane above the bottom of said boiler, a horizontal air passage through the boiler having a downwardly extending portion at one end, means for feeding a mixture of oil vapor and superheated steam to said burner, said means comprising a horizontal mixing tube, an oil pocket within the bottom of said tube, and means for automatically feeding oil and controlling the level of the same within said pocket, one end of said tube being in communication with the superheater and the other in communication with the burner.

6. In a device of the class described, a boiler body, means for feeding water to said boiler body, a super-heater above and cast integral with said boiler body and in communication therewith at one end, a second superheater parallel with the first and in communication with the opposite end of the first superheater, a horizontal mixing tube adjacent to the upper edge of the opposite side of the boiler body from that on which the second super-heater is located, a segment I of an annular flange in the bottom of said tube at each end to form an oil pocket, means for controlling and feeding oil to said pocket and to automatically regulate the level of the same below the upper edges of said flanges, a burner above the lower edge and near the side of the boiler body below the second superheater, said burner having inclined openings to eject flames against the side of said boiler body above the water line therein, means for providing communication between the burner and said mixing tube, and means for providing communication between the mixing tube and one end of said second superheater.

Des Moines, Iowa, November 22, 1912.

EDWARD A. I-IORNBOSTEL. JOHN CAREY.

Witnesses M. WALLACE, H. ANDERSON.

Commissioner of Patents, 

